18068941. RECONFIGURABLE TRANSMIT DIGITAL-TO-ANALOG CONVERTER (DAC) CIRCUIT simplified abstract (QUALCOMM Incorporated)

RECONFIGURABLE TRANSMIT DIGITAL-TO-ANALOG CONVERTER (DAC) CIRCUIT

Organization Name

QUALCOMM Incorporated

Inventor(s)

Ashok Swaminathan of Cardiff CA (US)

Nitz Saputra of Burlingame CA (US)

Negar Rashidi of Mission Viejo CA (US)

Shahin Mehdizad Taleie of San Diego CA (US)

Chinmaya Mishra of San Diego CA (US)

Dongwon Seo of San Diego CA (US)

Jong Hyeon Park of San Jose CA (US)

Sang-June Park of San Diego CA (US)

RECONFIGURABLE TRANSMIT DIGITAL-TO-ANALOG CONVERTER (DAC) CIRCUIT - A simplified explanation of the abstract

This abstract first appeared for US patent application 18068941 titled 'RECONFIGURABLE TRANSMIT DIGITAL-TO-ANALOG CONVERTER (DAC) CIRCUIT

Simplified Explanation: The patent application describes methods and apparatus for sharing digital-to-analog converters in a reconfigurable DAC circuit to support multiple transmit chains of a wireless transmitter for different radio access technologies and transmitter architectures.

• The DAC circuit includes at least four DACs and switches to configure it as a multi-channel DAC circuit for one set of frequency bands and as an interleaved DAC circuit for another set of frequency bands.
• This innovation allows for flexibility in supporting different radio access technologies and transmitter architectures within a single wireless transmitter.
• By sharing DACs and utilizing switches, the transmitter can adapt to various frequency bands and configurations efficiently.
• The technology enables cost-effective and space-saving solutions for wireless transmitters that need to support multiple radio access technologies.

Potential Applications: This technology can be applied in multi-mode wireless transmitters used in cellular networks, IoT devices, satellite communications, and other wireless communication systems that require flexibility in supporting different radio access technologies.

Problems Solved: 1. Efficiently supporting multiple radio access technologies within a single wireless transmitter. 2. Cost-effective solutions for adapting to different frequency bands and transmitter architectures. 3. Space-saving design for wireless transmitters with limited physical footprint.

Benefits: 1. Flexibility in supporting various radio access technologies. 2. Cost savings through shared DAC resources. 3. Space efficiency in transmitter design. 4. Enhanced adaptability to different frequency bands.

Commercial Applications: The technology can be utilized in the development of multi-mode wireless transmitters for cellular base stations, IoT devices, satellite communication systems, and other wireless communication applications. This innovation offers a competitive edge in the market by providing cost-effective and flexible solutions for supporting multiple radio access technologies.

Questions about the Technology: 1. How does the reconfigurable DAC circuit improve the efficiency of wireless transmitters? 2. What are the key advantages of sharing DACs in supporting multiple transmit chains?

Original Abstract Submitted

Methods and apparatus for sharing digital-to-analog (DAC) converters in a reconfigurable DAC circuit to support two or more transmit chains of a wireless transmitter configured for different radio access technologies (RATs) and/or different transmitter architectures. One example DAC circuit generally includes at least four DACs and a plurality of switches coupled to outputs of the at least four DACs such that the DAC circuit is configured as a multi-channel DAC circuit with at least four channels for a first set of one or more frequency bands and as an interleaved DAC circuit with at least two channels for a second set of one or more frequency bands different from the first set of frequency bands.